13320312243444 has 72 divisors (see below), whose sum is σ = 35696320744448. Its totient is φ = 4180743149760.

The previous prime is 13320312243437. The next prime is 13320312243449. The reversal of 13320312243444 is 44434221302331.

13320312243444 is a `hidden beast` number, since 1 + 3 + 3 + 203 + 1 + 2 + 2 + 4 + 3 + 444 = 666.

It is a super-2 number, since 2×13320312243444² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 13320312243399 and 13320312243408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13320312243449) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 161252812 + ... + 161335395.

Almost surely, 2^{13320312243444} is an apocalyptic number.

It is an amenable number.

13320312243444 is an abundant number, since it is smaller than the sum of its proper divisors (22376008501004).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13320312243444 is a wasteful number, since it uses less digits than its factorization.

13320312243444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 322588285 (or 322588280 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 36.

Adding to 13320312243444 its reverse (44434221302331), we get a palindrome (57754533545775).

The spelling of 13320312243444 in words is "thirteen trillion, three hundred twenty billion, three hundred twelve million, two hundred forty-three thousand, four hundred forty-four".